add feature test user_clicks_upvote, add vote controller and associated generated files
resolve merge conf
add route to create prompt vote in config/routes
add upvote functionality, passing first feature test
add downvote functionality, passes first feature test, add validation to votes model polarity
add check_for_duplicates method in vote model, should be a validation but refactor later. passing tests
Merge pull request #36 from avifoxi/voting-feature-test

Voting feature test - controller too fat - REFACTOR
Fixed merge conflicts for vote addition
Added vote buttons to prompt views